Creative T20 Series II speakers standby mode?

Phoenix_au · 9 Oct 2021 at 11:27

For anyone who comes across this - I just spent a couple of hours reverse engineering the circuit in the T40 Series 2 and found an easy mod to make the speakers permanently on (not go to stand-by if silent). I'd expect the same circuit in T20.

Short over collector-emitter of Q2.

Essentially this bypasses the whole sound detection circuit.

Subliminal Aura · 9 Oct 2021 at 17:46

Phoenix_au said:
For anyone who comes across this - I just spent a couple of hours reverse engineering the circuit in the T40 Series 2 and found an easy mod to make the speakers permanently on (not go to stand-by if silent). I'd expect the same circuit in T20.

Short over collector-emitter of Q2.

Essentially this bypasses the whole sound detection circuit.

Thank you !

I've been waiting 8 years for a solution and still have the speakers on my desk :cry:

Mcnumpty2323 · 9 Oct 2021 at 18:11

Nice work well done
Now if you can just do my Harmon kardons too lol

yashiro · 14 Oct 2021 at 06:55

https://veg.by/en/projects/soundkeeper/comment-page-3/#comment-1302

Plays an inaudible sound to stop audio devices going into standby. Use the beta, scroll up the page for full info.

Mcnumpty2323 · 14 Oct 2021 at 07:43

@yashiro
That looks interesting mate thanks
Will try it later
Assuming the sound it can reach is below
What animals can hear
Or will drive my cats crazy

Mcnumpty2323 · 14 Oct 2021 at 11:26

@yashiro
just tested that on harmon kardon
seems to work
the led on the subwoofer lit up indicating its on
so thanks now i can actually hear notification sounds
before they would not trigger the speakers fast enough
to actually hear them
ie the notification sounds are so short they finished before
i heard them even if they actually kicked the
speakers out of sleep mode

Jay85 · 14 Oct 2021 at 11:59

I've had these for like 10 years and never noticed a standby mode?! Only recently retired them

techguyone · 26 Feb 2022 at 08:52

Does this actually work on the T20 I tried it and the thing still went to sleep, it's possible I need to enter some extra parameters though, although I don't know quite what.

techguyone · 26 Feb 2022 at 08:52

yashiro said:
https://veg.by/en/projects/soundkeeper/comment-page-3/#comment-1302

Plays an inaudible sound to stop audio devices going into standby. Use the beta, scroll up the page for full info.

Does this actually work on the T20 I tried it and the thing still went to sleep, it's possible I need to enter some extra parameters though, although I don't know quite what.

zbx89 · 21 May 2022 at 22:32

Phoenix_au said:
For anyone who comes across this - I just spent a couple of hours reverse engineering the circuit in the T40 Series 2 and found an easy mod to make the speakers permanently on (not go to stand-by if silent). I'd expect the same circuit in T20.

Short over collector-emitter of Q2.

Essentially this bypasses the whole sound detection circuit.

I just made an account to thank you for your solution. I've just modded my T20 II and seems to be working flawlessly.
You saved me from buying new set of speakers as I really liked these except for that stupid 'feature'.

lord filbuster · 22 May 2022 at 00:05

zbx89 said:
I just made an account to thank you for your solution. I've just modded my T20 II and seems to be working flawlessly.
You saved me from buying new set of speakers as I really liked these except for that stupid 'feature'.

Same, I literally just did the same on my T40s today, it works perfectly and it was easy to do. No idea why I put up with it so long.

techguyone · 22 May 2022 at 09:41

I tried numerous 'inaudible sound' fixes to no avail, in the end it got to me so much I drop - kicked the speakers altogether and just got a set of Edifier R1280DBs

Much happier, dare I say it, sounds better and no standby.

Fare thee well Creative (wherever you landed)

zbx89 · 22 May 2022 at 10:41

I myself tried to decide between R1280T/1280DB/1280DBS but wanted to give uncle Google one more try regarding modding creatives(never tried any inaudible fixes personally).
Whole procedure took maybe like 10minutes and the hardest part was separating the case without causing any damage to it.
If they ever kick the bucket it's good to know edifiers come without such an annoyance.

mattyfez · 24 May 2022 at 18:23

I've got the opposite problem with my t20 series 1/origonal.. great speakers but the power brick is always warm even when the speakers are switched off, so obviously a waste of electric unless I unplug them from the mains.

throwaway4372 · 24 May 2022 at 18:29

heh this is winding me up too, I start a zoom call and the person's like "hello?", sigh... new speakers at some point

techguyone · 24 May 2022 at 18:40

throwaway4372 said:
heh this is winding me up too, I start a zoom call and the person's like "hello?", sigh... new speakers at some point

I found my Edisons pretty ok, obviously a bit bigger though.

Scougar · 4 Jun 2022 at 14:57

Phoenix_au said:
For anyone who comes across this - I just spent a couple of hours reverse engineering the circuit in the T40 Series 2 and found an easy mod to make the speakers permanently on (not go to stand-by if silent). I'd expect the same circuit in T20.

Short over collector-emitter of Q2.

Essentially this bypasses the whole sound detection circuit.

I am just stunned this took so long for someone to actually figure this out. Hats off to you.

adeptius · 17 Oct 2022 at 22:06

Phoenix_au said:
For anyone who comes across this - I just spent a couple of hours reverse engineering the circuit in the T40 Series 2 and found an easy mod to make the speakers permanently on (not go to stand-by if silent). I'd expect the same circuit in T20.

Short over collector-emitter of Q2.

Essentially this bypasses the whole sound detection circuit.

I LOVE YOU MAN!!!

mattyfez · 17 Oct 2022 at 22:30

Wow this thread still going? I've only got the original T20.. I've thought about getting something bigger and better.. But they are really decent little speakers. I've certainty got my monies worth out of them

ProjectJE · 13 Nov 2022 at 16:26

My T20-II's always did this but the T40-IIs did not and always thought they were faulty as I was aware of the power saving feature. The T40s were connected to a XonarD1 card.

Now they are connected to a Logitech Bluetooth adapter and they have started doing the power save thing so there must have been an unnoticeable interference hum keeping them awake previously.

They are in the bedroom so having that blue light turn off (another annoying feature) is actually a good thing for me now though it did annoy me for many years on the T-20s.